Severne Mach9 Sail

note: Stock is not live, and as a new 2026 product, please contact us before ordering to check stock and delivery timeframes :)

MACH 9

PRO SLALOM - 5.0 / 5.5 / 6.5 / 7.5 / 8.5
ENGINEERED TO WIN.

Nine generations of race-winning evolution create instant acceleration from first contact. The Mach 9 hits maximum performance instantly – no wind-up time, no delay.

New CarbonFusion strips eliminate stretch where it matters most. Enhanced construction on mid sizes (5.5, 6.5) adds the stiffness that translates to better low-end response and acceleration. Crucial for starts and fighting for position in traffic.

Finer entry profiles slice through any wind state with minimal drag. Adjusted boom lengths match the power delivery needed for each size. Size specific tuning: 5.0 runs softer for high wind control, while larger sizes (7.5, 8.5) focus on improved low end power with higher centre of lift placement for more powerful profiles.

Xtended Range technology delivers bigger gaps between sizes. Deeper, more powerful profiles locked in place with added skin tension enhance control and stability at both ends of the wind range.

Engineered to win.

MACH 9 UPGRADES:
> Direct power transfer even when not fully loaded
> New CarbonFusion strips eliminate stretch
> Enhanced mid-size construction for low-end response
> Finer entry profiles reduce drag
> Size specific power tuning

TECHNOLOGY -

> XL PERFORMANCE - Used on the MACH 5, the XL Cam maximizes leading edge stability by allowing increased cam pressure to be distributed over a wider surface area.
Rotation is improved by the increased the leverage of the longer cam.
Mast wear is reduced due to less friction from the 8 rollers.

> 3&4 ROLLER TACK PULLEY - Roller tack pulleys are matched to the sails downhaul requirements and aligned for friction free downhauling and threading ease. Rig your sails with the Severne Hardware Division extensions for function and simplicity.

> SEAMLESS FOOT CONSTRUCTION - A single panel in the foot area with hidden load patches and zero exposed stitching eliminates seam abrasion and seam creep in this high load area. Maximum durability and minimum weight.

> AUTO-ADJUST FOOT - Previously we focused on drag reduction in the upper parts of the sail, but with Mach 9, even the foot sections have been analysed and refined. Less tension on the foot edge combined with more forward-oriented shaping allows the foot to twist and auto-adjust.

> OPTIONAL CLEW POSITIONS - 

POSITION 1: This is the recommended setting and carries the adjustable outhaul fitting. It creates the perfect balance between a comfortable clew height and leech tension. This is the setting that Matteo Iachino will use for 99% of PWA slalom races.

POSITION 2: This setting is lower and further in. It softens the feel of the sail and may be more comfortable for smaller, lighter riders looking for more control in higher winds.

> INCREASED MID-LEECH TWIST - The mid leech has been opened more to decrease drag. Fast and slippery.

> NEW SLEEVE PANEL LAYOUT - A NEW SLEEVE CONSTRUCTION METHOD CONNECTS THE SAIL FROM TOP TO BOTTOM AND WITH THE SAIL BODY.

> PERFORMANCE MONOFILM CONSTRUCTION - Monofilm Construction to maximise performance and minimize weight. Construction mimics the exact sail prototypes that were tested by our racers.

> APEX SKIN TENSION - Capitalizing on the performance and proven durability of the Apex Pro mast, more luff curve has increased skin tension to lock the profile low and forward where it can be most easily controlled.

> ACCELERATED LEECH - Automating the dynamic twist has enabled us to remove the Reflex system. The lower leech twist is now pre-loaded to mimic the twist pattern induced by the Reflex batten under load. Significant advantages are simpler tuning, reduced weight, and increased durability.

> OPTIMISED AERODYNAMICS - By aligning the battens with the direction of airflow drag has been reduced. Clean panels with minimal seams further improve the aerodynamics.

> DIRECT DRIVE TENSIONERS - The DDT 4 and DDT 5 tensioners directly connect the tube batten to the leech of the sail. This new design eliminates the heavy section of the tube that is needed for the standard batten tensioner. And being smaller, it has superior aerodynamics. It is used on all lower tension battens in the OVERDRIVE and the MACH 7.